I had an Eagle Fish Easy fish finder about 10 years ago. It worked great for a while ice fishing in Wyoming. The temps never got below zero. During my second season in Montana, I was fishing in -15 weather. The LCD on the fish finder disappeared and never came back. I had to chuck it and get a new one. Now I have a Lowrance X67c. I have heard that these units can withstand sub-zero temps. I have used it below zero before without trouble, but not -15. Do any of you have experiences with this unit in bitter cold weather that you can share? How cold? Has anyone had one that broke in cold weather?